Arias Pistons 12.5:1 Compression 82mm Bore Honda B-series on 2040-parts.com

Porsche Panamera Turbo S (2011) first pictures

This is the new Porsche Panamera Turbo S, and because the GT2 RS has sold out, it’s now the most powerful Porsche on sale. Porsche Panamera Turbo S: the numbers The new Porsche Panamera Turbo S is powered by the same direct injection and twin-turbo 4.8-litre V8 that’s found in the regular Panamera Turbo. But thanks to new turbochargers with titanium-aluminium turbine wheels (which cut weight and improve responsiveness) and a new ECU, the power output climbs from an already impressive 493bhp and 516lb ft to 550bhp and 553lb ft.

Bentley gives Continental GT Speed even more power

The Bentley Continental GT Speed has never been accused of being a slouch when it came to power, bluntly incorporating the word Speed in its name, but it seems the company's engineers believe there is still room for improvement. And so for 2015 the Bentley Continental GT Speed and Bentley Continental GT Speed Convertible will receive a slight bump up in power, and will now offer 626-hp and 607 lb-ft of torque. That's up from 616-hp and 590 lb-ft of torque in the 2014 versions of this 6.0-liter W12 beast.

Video: Adrian van Hooydonk on the BMW 4-Series Coupe concept

BMW's Director of Design Adrian van Hooydonk explains the design strategy behind the 4-Series Coupe concept's design in a video interview filmed at the car's reveal at the Munich Design Night. He talks us through how the design team played with the wheelbase length to create new shapes and convey a sense of "elegance and power". Check out the full story and gallery of the BMW 4-Series Coupe concept for more information on the car that will replace the 3 Series coupe.